Defend The Alamo is a tactical simulation of the Battle of the Alamo (February 23 - March 6, 1836), a turning point of the Texas Revolution. The player takes command of Texian defenders in Alamo Mission (only a handful of riflemen and cannons), trying to fend off general Santa Anna's Mexican army, while conserving precious ammo and men.
The game offers optional alternate set-ups for the battle (giving more chances to doomed defenders). Messengers can be sent with requests for reinforcements. You not only have top-down view of the mission, but also viewpoints in the four cardinal directions from the walls, where you can spot advancing troops or artillery pieces and react accordingly.
From Mobygames.com. Original Entry